[issue19933] Round default argument for "ndigits"

[Mark Dickinson]

Mark Dickinson added the comment:

> After patch:
> round(1.23, 0) => 1 not 1.0
> round(4.67, 0) => 5 not 5.0

Please no!  Two-argument round should continue to return a float in all cases.

The docs should be fixed.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19933>
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